CN101707675B - Display control circuit and method for controlling display to receive and select programs - Google Patents

Abstract

The invention discloses a control circuit of a display and a method for controlling the display to receive and select programs, wherein the method comprises the following steps: receiving a television signal; processing the television signal to generate program information; storing the program information; receiving input data; reading the program information, and comparing the program information with the input data to generate a program comparison result; and displaying the program comparison result.

Description

Display control circuit and method for controlling display to receive and select programs

This application is a divisional application, the application number of its parent case: 200710079510.2, the application date: February 16, 2007, the title of the invention: a control circuit for a display and a method for selecting a TV program.

technical field

The invention relates to a control circuit of a display and a method for selecting a TV program, in particular to a control circuit of a display with a program search function and a method for controlling the display to receive program information of a TV program and to select a program.

Background technique

With the vigorous development of digital TV, the services it can provide are becoming more and more diversified. For example, in the channels of digital TV, additional program information of TV programs is provided, including program schedule, broadcast channel, program content information, etc. Introduction, actors or contestants participating in the performance, and program ratings, etc., this type of program information is collectively referred to as Electronic Program Guide (EPG). Before there was an electronic program menu, viewers had to look up paper TV program schedules, such as through newspapers or program schedules provided by cable TV operators, or they had to search online to learn the program schedules of many TV stations. With the electronic program menu, viewers can directly query TV programs on the TV, and only need to operate the remote control to find the TV program list of each TV station in the last week or two, and can see the details of each program. Introduction, viewers can more easily find the programs they want to watch.

U.S. Patent Application No. US 10/225,421 uses an electronic program menu to provide viewers with an easier interface and method to find TV programs. It utilizes displaying a control panel on the monitor, so that viewers can use the buttons on the panel to select time information and channels, so that they can obtain the program information of a certain program to decide whether to watch the program. However, when the number of TV stations reaches a certain level, it will be time-consuming and troublesome to browse through each channel and each program to find the program you want to watch. Therefore, there is a need for a more convenient method for viewers to find the program they want to watch faster. .

Contents of the invention

The technical problem to be solved by the present invention is to provide a control circuit of a display with a program search function and a method for controlling the display to receive program information and select a program, so as to save viewers time in searching for programs.

In order to achieve the above object, the present invention provides a control circuit of a display with a program search function, which is characterized in that it includes:

a tuner for receiving a television signal;

A demodulation unit, coupled to the tuner, used to demodulate the TV signal to generate a demodulated signal;

A data analysis unit, coupled to the demodulation unit, for analyzing and processing the demodulated signal to generate program information;

a storage unit, coupled to the data analysis unit, for storing the program information;

a receiving unit for receiving an input data; and

A controller, coupled to the tuner, the storage unit and the receiving unit, is used for reading the program information from the storage unit, and comparing the program information with the input data.

Said control circuit, wherein, the receiving unit also receives a power-on signal, and the controller controls the display to enter a power-on mode from a standby mode according to the power-on signal.

Said control circuit, wherein, before the receiving unit receives the power-on signal, the tuner receives the TV signal, and the data analysis unit analyzes and processes the demodulated signal to generate the program information.

The control circuit, which also includes:

an image decoder, coupled to the demodulation unit, for decoding an image component of the demodulated signal to generate a decoded image signal; and

an image processing unit, coupled to the image decoder and the controller, for processing the decoded image signal to generate a TV program image signal, wherein

The controller generates a program comparison result after comparing the program information with the input data, and also controls the image processing unit to display the program comparison result on a display unit.

The control circuit, wherein, when the receiving unit receives a program information browsing signal, the controller reads the program information from the storage unit, and controls the image processing unit to output a program information browsing screen to display the program information.

In the control circuit, when the image processing unit outputs the program information browsing screen, the output of the TV program image signal is suspended.

In the control circuit, the program information browsing screen further includes an input window, and the controller controls the input data received by the receiving unit to be displayed on the input window.

The control circuit, wherein, when a target program of the program comparison result is selected, the controller judges whether the target program is being broadcast, and if the target program is not being broadcast, the controller generates a reminder message, and The reminder information is stored in the storage unit.

In the control circuit, the controller further determines whether the storage unit stores the reminder information, and controls the image processing unit to display a reminder picture according to the reminder information.

In order to achieve the above object, the present invention also provides a method for controlling a display to receive program information of a TV program and to select a program, which is characterized in that it includes:

receiving a first television signal with a first tuner;

processing the first television signal to generate program information;

store the program information;

receiving an input data;

comparing the program information with the input data to generate a program comparison result; and

Display the program comparison results.

The method, wherein, also includes:

The display is activated so that the display enters a power-on mode from a standby mode.

The method, wherein the first tuner receives the first television signal, and processes the first television signal to generate the program information is completed in the standby mode.

The method, wherein, also includes:

The program information is read according to a program information browsing signal, and a program information browsing picture including the program information is displayed.

The method, wherein, also includes:

When a target program of the program comparison result is selected, it is judged whether the target program is broadcasting, and if the target program is broadcasting, the television signal corresponding to the target program is received.

The method, wherein, also includes:

When a target program of the program comparison result is selected, it is judged whether the target program is being broadcast, and if the target program is not being broadcast, a reminder message of the target program is generated and the reminder message is stored.

The method, wherein, also includes:

It is judged whether the storage unit stores the reminding information, and a reminding picture is displayed according to the reminding information.

The method, wherein, also includes:

receiving a second television signal with a second tuner;

processing the second television signal to generate a television program image signal; and

Display the TV program image signal.

By adopting the invention, viewers can quickly find the programs they want to watch, which greatly saves the time for viewers to search for programs.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the control circuit of the display with program search function according to the first embodiment of the present invention;

Fig. 2 is the schematic diagram of program information browsing screen of the present invention;

Fig. 3 is a schematic diagram of simultaneously displaying program images and program information browsing screens on the display;

Fig. 4 is a schematic diagram showing only the program information browsing screen on the display;

5 is a control circuit of a display with a program search function according to a second embodiment of the present invention;

6 is a flow chart of the present invention performing channel scanning after the display is turned on;

FIG. 7 is a flow chart of performing channel scanning in the standby state of the display according to the present invention.

Among them, reference signs:

110, 510, 520 tuner

120, 530 demodulation unit

130, 540 multiplexer

140, 550 image decoder

150, 570 audio codec

160, 580 data analysis units

165, 585 storage units

170, 560 image processing unit

180, 590 controller

190, 595 receiving unit

300, 400 monitors

310, 410 program information browsing screen

320, 420 input window

330 image frames of TV programs

Detailed ways

Certain terms are used in the specification to refer to particular components. It should be understood by those skilled in the art that hardware manufacturers may refer to the same component by different terms. This specification does not use the difference in name as a way to distinguish components, but uses the difference in function of components as a criterion for distinguishing. The "comprising" mentioned throughout the specification is an open term, so it should be interpreted as "including but not limited to". Otherwise, the term "coupled" includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

Please refer to FIG. 1 . FIG. 1 is a control circuit of a display with program search function according to a first embodiment of the present invention. The control circuit 100 includes a tuner 110, a demodulation unit 120, a multiplexer 130, an image decoder 140, an image processing unit 170, an audio decoder 150, a data analysis unit 160, a storage unit 165, and a controller 180 and a receiving unit 190 . The tuner 110 receives television signals, which may be digital or analog television signals. Generally speaking, traditional analog TV signals do not provide complete program information for viewers to browse. However, with the digitization of TV programs, during the transition period of analog and digital signals, the same TV station may provide both analog TV signals and digital TV signals. In addition, the digital TV signal can transmit the program information of the analog TV signal in addition to its own program information, so viewers can still query the program information of the analog TV.

The TV signal received by the tuner 110 is then demodulated by the demodulation unit 120. According to different signal transmission standards, the demodulation method of the demodulation unit 120 is also different. , so there must be a corresponding demodulation unit 120 . The demodulated signal after demodulation is separated from the image component, audio component and data component of the TV signal through the multiplexer 130, and then different processing is performed according to the different characteristics of each signal component, such as image The component passes through the image decoder 140 to generate a decoded image signal, and then the image processing unit 170 performs further processing, such as image scaling, interpolation, brightness adjustment, noise removal, image sharpening, etc., and Generate a TV program image signal, which can be presented to the viewer through a display, such as a liquid crystal display, a plasma display, etc.; the audio component is processed by the audio decoder 150 to generate an audio signal; and the data component is analyzed by the data. The unit 160 generates program information after analysis and processing, and stores it in the storage unit 165 .

The controller 180 is coupled to the tuner 110, the multiplexer 130, the storage unit 165, the image processing unit 170 and a receiving unit 190, and the viewer can transmit instructions to the controller 180 through the receiving unit 190, for example, when the viewer When the channel selection signal is input, the controller 180 on the one hand controls the tuner 110 to switch to the physical channel (Physical Channel) corresponding to the target program to be selected, and on the other hand controls the multiplexer 130 to select the target program. When the viewer inputs the program information browsing signal, the controller 180 reads the program information from the storage unit 165, and controls the image processing unit 170 to output the program information browsing screen to a display unit (not shown), and the viewer can directly view the program information on the display unit. Browse TV programs on the unit.

Please refer to FIG. 2 . FIG. 2 is a schematic diagram of the program information browsing screen of the present invention. The date, channel and channel name are displayed on the screen. Viewers can inquire about program information according to their favorite channel and specific date. The browsing screen of the program information takes half an hour as a unit. The show titles for will span at least two time periods. In addition to displaying the program name, the program information browsing screen also displays the content summary of the program. For example, the program of Channel 2 B TV station from 18:30 to 20:00 is the movie "XYZ", and the movie summary is displayed below the movie name. For example, plot introduction, actor introduction, award-winning records, box office, etc., so that viewers can have a general understanding of the movie. This type of information is called the Event Information Table (EIT) in the Program and System Information Protocol (PSIP) of the US regulations. In addition, the PSIP also includes the Extended Text Table (Extended Text Table, ETT) is used to display a more detailed program introduction.

The above-mentioned receiving unit 190 may be a control panel on a display (such as a flat-panel display), or a receiver of a remote controller. The image processing unit 170 can simultaneously output the TV program image signal and the program information browsing picture. At this time, the program information browsing picture can be displayed on the display unit in the form of a window display, such as On Screen Display, as shown in FIG. 3 , the image screen 330 of the TV program and the program information browsing screen 310 are displayed on the screen of the display 300; another situation is that when the image processing unit 170 outputs the program information browsing screen, the output of the TV program image signal is suspended, as shown in Figure 4 As shown, the controller 180 can control the image processing unit 170 to only output the program information browsing picture 410 without outputting the TV program image signal, so the program information browsing picture 410 can be displayed on the screen of the display 400 in a full-screen manner, allowing viewers to more easily Easy to browse program information. However, due to the large number of channels and programs, it is difficult for the viewer to find the desired program in the huge program information. Therefore, the present invention proposes a function of searching for programs, so that the viewer can quickly find the desired program. When the viewer executes the program search function, the receiving unit 190 receives a channel search signal and notifies the controller 180, and the controller 180 controls the image processing unit 170 to display an input window 320, 420 on the program information browsing screen 310, 410, such as As shown in Fig. 3 and Fig. 4, in the input window 320, 420, the viewer can use the remote controller or the control panel on the display 300, 400 to input keywords, and the keywords (or called input data) are input by the receiving unit 190 receives and provides to the controller 180, the controller 180 on the other hand reads the program information from the storage unit 165, and then compares the input data with the program information to generate a comparison result. When comparing, the controller 180 will compare the input data with all the content contained in the program information, for example, at least the EIT and ETT content contained in the PSIP of the above-mentioned US regulations, which are included in the scope of the search and comparison of the controller 180, In addition, dates, channels, channel names, program titles, etc. are also objects of search and comparison. Compared with the PSIP of the US standard, the broadcasting system of the European standard also has a similar Electronic Program Guide (EPG), and the controller 180 will also search and compare similar channel and program information.

After the search and comparison is completed, the controller 180 transmits the program comparison result to the image processing unit 170 to be displayed on the program information browsing screens 310 , 410 . The result of the program comparison will list the channels and programs that completely match or approximate the keywords. The viewer can move the cursor to select the target program of interest. After selection, the controller 180 judges whether the program is based on the broadcast time of the target program. In broadcasting (On Air), if yes, then controller 180 instructs tuner 110 to switch the receiving frequency band to the physical channel corresponding to the target program, and controls the multiplexer 130 to select the target program, so the image processing unit 170 can send the image signal of the target program; if the target program is not being broadcast, the controller 180 controls the image processing unit 170 to display a warning signal on the program information browsing screen to inform the viewer that the target program is not in the broadcast state, and ask the viewer whether to A reminder function is set. If the viewer sets the reminder function, the controller 180 generates a reminder message and stores the reminder message in the storage unit 165 . The controller 180 will regularly check the reminding information in the storage unit 165, and according to the time set by the reminding information, when the target program is about to play, control the image processing unit 170 to send a reminding picture to inform the viewer. The window display method, such as on-screen display, is displayed on the monitor simultaneously with the TV program image.

In the embodiment shown in FIG. 1, if the program information of each program is to be collected and then stored in the storage unit 165, the controller 180 must control the tuner 110 and the multiplexer 130 to scan all the channels once. to retrieve program information for each program. This action can be performed when the display is turned on. At this time, the tuner 110 is continuously switching channels under the control of the controller 180, so the display cannot present a stable TV picture, so the controller 180 can control the image processing unit 170 to send a waiting picture to notify The viewer monitor is scanning for channels. Waiting for the channel scanning process to be completed, and after the program information of each program has been stored in the storage unit 165, the controller 180 controls the image display unit 170 to stop transmitting the waiting screen and transmit the TV program image instead. However, the steps of channel scanning usually take a lot of time. If the viewer does not issue an instruction to interrupt the scanning, he must wait for the completion of the channel scanning process before he can normally watch the program. In order to improve this shortcoming, when the display is in standby mode (stand-by mode) (that is, the state of being connected to the power supply but not turned on), the method of software control can be used to make the controller 180 automatically control the tuner 110 and the multiplexer. The multiplexer 130 performs channel scanning, collects the program information of each program and stores it in the storage unit 165 . When in the standby mode, the screen of the display is in the off state. At this time, the viewer can transmit a power-on signal to the controller 180 through the receiving unit 190. After the controller 180 receives the power-on signal, it controls the display to enter the power-on mode from the standby mode. , that is, switch the screen of the monitor to the on state. Therefore, before the display is turned on, if the controller 180 has controlled the tuner 110 to complete channel scanning and generate program information, then when the display is turned on, the storage unit 165 has stored complete program information, and viewers can immediately watch TV programs, browse For program information or program search, there is no need to wait for the scanning process to complete after powering on.

In addition to performing channel scanning in standby mode to update program information, channel scanning can also be performed with the assistance of a second tuner. Please refer to FIG. 5 . FIG. 5 is a control circuit of a display with program search function according to a second embodiment of the present invention. The control circuit 500 includes tuners 510 and 520, a demodulation unit 530, a multiplexer 540, an image decoder 550, an image processing unit 560, an audio decoder 570, a data analysis unit 580, a storage unit 585, a control device 590 and receiving unit 595. Components in FIG. 5 have similar or identical functions to components with the same name in FIG. 1 . In this embodiment, the controller 590 can control one of the tuners 510 and 520 to perform channel scanning to collect program information, and control the other tuner to switch the frequency band to the program channel selected by the viewer. The corresponding physical channel is used to receive the program signal of the TV program that the viewer wants to watch. For example, the controller 590 controls the tuner 510 to receive the first TV signal, the first TV signal is demodulated by the demodulation unit 530 to generate a first demodulated signal, and then the data analysis unit 580 analyzes and processes the first demodulated signal The data components of the signal are used to generate program information, that is to say, the controller 590 controls the tuner 510 to perform channel scanning to collect program information; on the other hand, the controller 590 controls the tuner 520 to receive the second TV signal, and the second TV signal is passed through The demodulation unit 530 generates a second demodulated signal after demodulation, and then the image decoder 550 decodes the image component of the second demodulated signal to generate a decoded image signal, and the image processing unit 560 processes the decoded signal. The image signal is used to generate a TV program image signal, that is, according to the program channel selected by the viewer, the controller 590 controls the tuner 520 to receive the corresponding second TV signal. In this way, receiving TV program signals and collecting program information can be performed at the same time, and viewers' ratings will not be affected.

The demodulation unit 530 is coupled to the tuners 510 and 520 at the same time, and is used to demodulate the TV signals received by the two tuners. The demodulated demodulated signal is processed by the multiplexer 540, and the controller 590 can be used according to The viewer's command controls the multiplexer 540 to select the program the viewer wants to watch. The signal separated by the multiplexer 540 is the same as the previous embodiment, divided into image components, audio components and data components. The image components are processed by the image decoder 550 and the image processing unit 560 to generate an image signal. The image decoder 550 and the image processing unit 560 are respectively similar to or have the same functions as the image decoder 140 and the image processing unit 170 in the first embodiment. The same function; the audio component is processed by the audio decoder 570 to generate an audio signal; the data component is analyzed and processed by the data analysis unit 580 to generate program information and stored in the storage unit 585 . The controller 590 is further coupled to a receiving unit 595, which is similar to the receiving unit 190, and may be a control panel on a display or a receiver of a remote controller, and is used to receive instructions or data input from viewers. The controller 590 is also coupled to the storage unit 585 and the image processing unit 560, and can read the program information in the storage unit 585, and control the image processing unit 560 to display on the display in the form of an on-screen display, or combine the program information with the receiving The input data received by the unit 595 is compared, and then the program comparison result is processed by the image processing unit 560 and output to the display.

The above-mentioned circuit architecture shown in FIG. 5 can also be applied to a display that supports the use of separate picture display (Picture OutPicture, POP) or overlapping picture display (Picture In Picture, PIP). Through the control of the controller 590, viewers can watch at the same time TV programs on two different channels. In this case, the viewer may select the function of watching two different channels at the same time immediately after turning on the power, so that the controller 590 cannot use the tuner 510 or 520 to perform channel scanning to collect program information, otherwise the controller 590 will It is necessary to control one of the tuners to switch to a fixed channel to receive the program selected by the viewer, and control the other tuner to perform channel scanning. During this period, the viewer can only watch one program. Resume watching two programs at the same time. In order to solve this inconvenient situation, the control circuit 500 can also use software control. When the display is in standby, the controller 590 uses one of the tuners 510, 520, or both to do channel scanning. , while using the tuners 510 and 520 to perform channel scanning, the time for collecting program information can be further shortened.

Please refer to FIG. 6 . FIG. 6 is a flow chart of performing channel scanning after the display is turned on according to the present invention. Initially, the display is in a standby state (S610), and starts to perform channel scanning (S620) after being turned on (S612). During the scanning process, it is judged whether the scanning has been completed (S622), if it has been completed, the TV program image is displayed (S630); if it has not been completed, it is judged whether the viewer interrupts the scanning procedure (S624). If the scanning procedure is not interrupted, continue scanning (S620), and if it is interrupted, display the TV program image (S630). Then judge whether there is reminder information (S632) in the storage unit, if there is, then display the reminder picture to remind the viewer (S634), show and continue to display the TV program image (S630); if there is no reminder information, then judge Whether the viewer inputs the program information browsing signal (S640). If not, continue to display the TV program image (S630); if yes, display the program information browsing screen (S642). If the viewer exits the browsing screen (S644), the TV program image is restored (S630); if the viewer does not exit the browsing screen (S644), it is further determined whether the viewer wants to search for a program (S650). If not, then continue to display the program information browsing screen (S642); if yes, then display the input window (S652) on the program information browsing screen, after the viewer inputs the keyword, compare the keyword and the program information to produce a comparison result ( S654), and display the comparison result (S656). Then determine whether the viewer selects a target program (S660), if not, then return to the step of searching for programs (S650); if yes, then determine whether the target program is being broadcast (S662). If yes, then switch to the target program (S664), then display the TV program image (S630); if not, then generate a reminder message, and store it in the storage unit (S666), then get back to display the program information browsing screen step (S642). In the second embodiment shown in FIG. 5, the controller 590 instructs the tuner 510 or the tuner 520 to switch the receiving frequency band to the physical channel corresponding to the target program, and controls the multiplexer 540 to select the target program, to switch to the target program (S664).

The flow chart shown in FIG. 6 is to perform channel scanning after the display is powered on. Another embodiment is to perform channel scanning when the display is in standby mode. The flow chart is shown in FIG. 7 . At the beginning, the display is in the standby state (S710), and then executes the channel scanning step to collect program information (S720), and then judges whether to turn it on (S730), and returns to the standby state (S710) if no boot instruction is received. ; If it is turned on, the TV program image is displayed (S630), and the subsequent steps are the same as the process in Fig. 6, and will not be repeated here.

By adopting the invention, viewers can quickly find the programs they want to watch, which greatly saves the time for viewers to search for programs.

Of course, the present invention can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (7)

1. there is a control circuit for the display of program-searching function, it is characterized in that, include:

One controller;

One first tuner, is coupled to this controller, is used for reception one first TV signal;

One second tune device, is coupled to this controller, is used for reception one second TV signal;

One demodulating unit, is coupled to this first, second tuner, is used for separating this first, second TV signal of modulation and separates modulating signal to produce one first solution modulating signal and one second;

One multiplexer, is coupled to this demodulating unit, for isolating data component, audio frequency component and image composition from this first solution modulating signal and this second solution modulating signal;

One data analysis unit, is coupled to this multiplexer, be used for analyzing and processing this first separate the data component of modulating signal to produce a programme information;

One storage element, is coupled to this data analysis unit, is used for storing this programme information;

One receiving element, is coupled to this controller, is used for reception one to input data;

One image decoding device, is coupled to this multiplexer, is used for the image composition decoding of this second solution modulating signal, to produce a decoding signal of video signal; And

One image process unit, is coupled to this image decoding device and this controller, is used for processing this decoding signal of video signal to produce a TV programme signal of video signal;

Wherein this controller reads this programme information in this storage element, and this programme information and this input data is compared, to produce a program comparison result;

When this receiving element receive a programme information browse signal time, this controller reads this programme information in this storage element, and controls this image process unit and export a programme information and browse picture, to show this programme information;

Wherein, when this display is standby, this controller controls this first tuner and/or this second tune device carries out channel scanning;

When a target program of this program comparison result is selected, this controller judges whether this target program is broadcast, if this target program is broadcast, this controller indicate this first or second tune device switch to physical channel corresponding to this target program by receiving frequency range, and control this multiplexer and choose this target program, and this image process unit sends the signal of video signal of this target program, if this target program is not broadcast, this controller controls this image process unit and browses on picture at this programme information and show warning signal to inform that this target program of audience is not in broadcasting state, and inquire whether audience sets prompting function, if audience sets prompting function, this controller produces a prompting message, be stored in this storage element, by the prompting message in this this storage element of controller regular check, and according to the time set by prompting message, when this target program is about to play, control this image process unit and send a prompting picture to inform audience.

2. control circuit as claimed in claim 1, it is characterized in that, this programme information browses the mode that picture shows with window, is shown in the display unit of this display.

3. control circuit as claimed in claim 1, it is characterized in that, this programme information browses picture in the mode that screen shows, and is shown in the display unit of this display.

4. control circuit as claimed in claim 1, is characterized in that, when this image process unit export this programme information browse picture time, suspend and export this TV programme signal of video signal.

5. control circuit as claimed in claim 1, it is characterized in that, this programme information is browsed picture and is also comprised an input window, and this controller controls these input data that this receiving element receives and is shown in this input window.

6. control the programme information of a display received television program and a method for select programs, it is characterized in that, include:

A TV signal is received with a tuner;

Process this TV signal to produce a programme information;

Store this programme information in a storage element;

Receive a starting-up signal and make this display enter a power on mode by a standby mode;

Receive input data;

Read this programme information, and this programme information and this input data are compared, to produce a program comparison result; And

Show this program comparison result;

Wherein receive this TV signal, and process this TV signal and complete under this standby mode to produce this programme information;

Browse signal according to a programme information and read this programme information, and the programme information that display comprises this programme information browses picture;

When a target program of this program comparison result is selected, judge whether this target program is broadcast, if this target program is broadcast, control this tuner and switch to physical channel corresponding to this target program by receiving frequency range, and control multiplexer and choose this target program, and control the signal of video signal that an image process unit sends this target program;

If this target program is not broadcast, control this image process unit and browse on picture at this programme information and show warning signal to inform that this target program of audience is not in broadcasting state, and inquire whether audience sets prompting function;

If audience sets prompting function, then produce a prompting message, be stored in this storage element, and the prompting message in this storage element of regular check, and according to the time set by prompting message, when this target program is about to play, controls this image process unit and send a prompting picture to inform audience.

7. method as claimed in claim 6, it is characterized in that, this programme information is browsed picture and is comprised an input window, and the method also includes:

These input data are shown in this input window.